556971617 has 4 divisors (see below), whose sum is σ = 557066496. Its totient is φ = 556876740.

The previous prime is 556971607. The next prime is 556971631. The reversal of 556971617 is 716179655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556971617 - 2⁴ = 556971601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556971607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38009 + ... + 50582.

It is an arithmetic number, because the mean of its divisors is an integer number (139266624).

Almost surely, 2^556971617 is an apocalyptic number.

It is an amenable number.

556971617 is a deficient number, since it is larger than the sum of its proper divisors (94879).

556971617 is an equidigital number, since it uses as much as digits as its factorization.

556971617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94878.

The product of its digits is 396900, while the sum is 47.

The square root of 556971617 is about 23600.2461215980. The cubic root of 556971617 is about 822.7685604102.

The spelling of 556971617 in words is "five hundred fifty-six million, nine hundred seventy-one thousand, six hundred seventeen".